Cotton mill hoist



Nov. 10, 1964 N. P. REAVIS Q 3,

COTTON MILL HOIST Filed Dec. 51, 1962 IN VENTOR.

I6 MRREAM United States Patent 3,156,448 COTTON MILL HOIST Notley P.Reavis, 812 E. Reeves St., Salisbury, NC. Filed Dec. 31, 1962, Ser. No.248,659 2 Claims. (Cl. 2547) The present invention relates to liftingdevices, and more particularly to cranes and hoists employed in cottonmills to deliver lickren drums to cotton processing machines.

The primary object of the present invention is the provision of aportable hoist which may be inexpensive to manufacture, simple and safeto operate.

Another object of this invention is the provision of a lifting devicemade entirely out of tubing sections welded together.

A further object of this invention is the provision of wheels tofacilitate moving the hoists close to the cotton processing machines.

An additional object of this invention is to provide simple yeteffective locking means to lock the lifting mechanism of the hoist in aninoperative position when not in use.

This invention also consists in certain other features of constructionand the combination and arrangement of several parts to be hereinafterfully described, illustrated in the accompanying drawing andspecifically pointed out in the appended claims.

In describing the invention in detail, references will be had to theaccompanying drawing Where like character numerals denote like orcorresponding parts throughout the several views in which:

FIG. 1 is a top elevational view of the hoist comprising the presentinvention;

FIG. 2 is a side elevational view of FIG. 1, showing the lickren drum inphantom lines; and

FIG. 3 is an end elevational view of FIG. 2.

Referring now more particularly to the drawing, the hoist or crane 10,made in accordance with the present invention is shown in FIG. 1comprising, in combination, a pair of upright tubular frames 11 and 12formed to resemble a tall triangle having the longer sides 13 and 14 andthe shorter or the base 15. Two pairs of wheels 16 and 17, one pair foreach frame 11 and 12, are secured to the base as substantially shown.

A vertical tubular supporting member 18 of somewhat greater diameterthan the tubular section of which the frames 11 and 12 are formed, iswelded to the triangular frames (see FIG. 3). The upright supports 18,at 19 are provided with an internal thread into which may be fitted thethreaded upright shafts or studs 20. At 21, the shafts 20 may beprovided with a horizontal hearing which receives the elongated shaft 22mounted to rotate in the bearing 21 and running the entire length of thehoist, from the frame 11 to the frame 12 respectively.

From FIG. 1 it may be seen that the shaft 22 may be provided with a pairof grooved pulleys 23 and 24 which are securely held thereto to turnwith the shaft 22 which is rotated by means of the manually operatedhandle bar 25. A cross stiffener 26 may be provided as substantiallyshown to hold the frames 11 and 12 at a substantial distance apart. Inthe event that it may be necessary to lock the shaft 22 in anon-operative position, a pin 26 hanging from a chain 27 may be insertedinto a hole 28 in the frame 18 so that it may be interposed in the pathof the operating handle 25. Chains or cables 29 and 30 wound upon thegrooved pulleys 23 and 24 may be provided to permit raising the cottondrum D to a convenient height above the ground.

It will now be recognized that the operation of the lifting deviceherein described is so simple that it hardly needs explaining. In actualpractice, the drum D is provided with a hole through which a lifting barB is shoved. At either ends thereof the cable or the lifting chains 29and 30' are made fast and the operating handle 25 is cranked to lift thedrum D to the required height above the ground. The pin 25 is shovedinto the hole 28 in the frame 12 to lock the lifting handle 25 in anon-operative position. Finally the hoist is rolled over to the cottonprocessing machine (not shown).

A careful consideration of the foregoing description in conjunction withthe invention as illustrated in the drawing will enable the reader toobtain a clear understanding and impression of the alleged features ofmerit and novelty sufficient to clarify the construction of theinvention as hereinafter claimed.

Minor changes in shape, size, materials and rearrangement of parts maybe resorted to in actual practice so long as no departure is made fromthe invention claimed.

What I claim as new and desire to protect by Letters Patent in theUnited States is:

1. A lifting crane of the class described comprising in combination apair of parallel, tubular side frames mounted on wheels, each of saidside frames having a triangular configuration comprised of a horizontalbase portion and a pair of upwardly converging side portions, anelongated cross bar extending transversely between a corresponding oneof said side portions on each of said side frames to secure said framesto each other, a vertical column in each frame, a thread formed at theuppermost section of each column, a threaded stud fitted in each of saidthreaded sections, the uppermost section of each said threaded studhaving a bearing, an operating shaft mounted in said bearings, saidshaft extending the entire length between said side frames, groovedpulleys on said shaft, chains over said pulleys and a handle bar formanual rotation of said shaft.

2. The combination according to claim 1, and means to lock saidoperating shaft comprising a locking pin, there being a locating hole inthe path of said handle bar, said pin being shoved into said hole, tolock said handle in a non-operative position.

References Cited in the file of this patent UNITED STATES PATENTS331,608 Bishop Dec. 1, 1885 349,502 Jones Sept. 21, 1886 392,139 BeckertDec. 11, 1888 464,487 Allen -2 Dec. 8, 1891 520,043 Fox May 22, 1894720,681 Derrig Feb. 17, 1903 1,204,470 Miller Nov. 14, 1916 2,039,464Troup May 5, 1936 2,754,523 Bruckner et al July 17, 1956 FOREIGN PATENTS484,063 Italy Aug. 26, 1953

1. A LIFTING CRANE OF THE CLASS DESCRIBED COMPRISING IN COMBINATION APAIR OF PARALLEL, TUBULAR SIDE FRAMES MOUNTED ON WHEELS, EACH OF SAIDSIDE FRAMES HAVING A TRIANGULAR CONFIGURATION COMPRISED OF A HORIZONTALBASE PORTION AND A PAIR OF UPWARDLY CONVERGING SIDE PORTIONS, ANELONGATED CROSS BAR EXTENDING TRANSVERSELY BETWEEN A CORRESPONDING ONEOF SAID SIDE PORTIONS ON EACH OF SAID SIDE FRAMES TO SECURE SAID FRAMESTO EACH OTHER, A VERTICAL COLUMN IN EACH FRAME, A THREAD FORMED AT THEUPPERMOST SECTION OF EACH COLUMN, A THREADED STUD FITTED IN EACH OF SAIDTHREADED SECTIONS, THE UPPERMOST SECTION OF EACH SAID THREADED STUDHAVING A BEARING, AN OPERATING SHAFT MOUNTED IN SAID BEARINGS, SAIDSHAFT EXTENDING THE ENTIRE LENGTH BETWEEN SAID SIDE FRAMES, GROOVEDPULLEYS ON SAID SHAFT, CHAINS OVER SAID PULLEYS AND A HANDLE BAR FORMANUAL ROTATION OF SAID SHAFT.